Major Helicopter Repairs

The standard process of major repair for the helicopters of the Mi family, their equipment, systems, assemblies and components, conducted by the WZL1, consists of the following phases supervised by the Departmental Quality Control:

• Receipt and assessment of a helicopter and/or helicopter assembly/components from a customer and signing the handover report by representatives of both the WZL 1 and the customer;
• Disassembly of the helicopter, parts and assemblies;
• Assessment of the technical condition of the airframe, dismantled parts, systems, assemblies and labelling them;
• Repairs, replacements, etc., depending on the assessment result;
• Transfer of the airframe, removed parts, systems, assemblies to appropriate departments selected for the repair, re-assembly, assessment, etc.;
• The repair/ maintenance/replacement process for the disassembled systems and assemblies and purchase of airframe structures for replacement;
• Re-assembly of the airframe and re-installation of the dismantled parts, systems, and assemblies, depending on the service rendered;
• Tests, checks, calibration and adjustment of the reassembled helicopter and its systems;
• Ground tests and checks;
• Helicopter painting and final outfitting;
• Flight tests;
• Acceptance of the aircraft after the repair.